There is no single famous film, show or viral video behind this clip, and it works precisely because of that. It is a generic reaction sound effect, the type of exaggerated sniff that creators reuse across memes, short skits and reaction edits whenever a smell joke needs an instant audio cue. Because the gesture is universal, viewers understand it without context, whether the target is spoiled food, a messy room or a character who has not showered. Its short length makes it easy to drop into edits, and its clear, comic timing keeps it popular for gross-out humour online.